Improvement in pendulum-scales



W. R. FAHR? Pendulum-Scales.

N0,146,Q4,4, Patentedjan.27,1874.

UNITED STATES PATENT OFFICE.

lVflLl'ilAlll lt. PARE, OF ELE A, MINNSOTA.

IMPROVEMENT IN PENDU LUM-SCALES.

Specilicaticn forming part of Leiters Patent No. 146,944, dated January 27', 1374; application tiled July 24, 1873.

To allfwhom yit may concern:

Be it known that l', l/VILLIMI R. PARR, oi' Elba, in the county ol' lVinona and State oi" Minnesota, have invented certain new and use- ;t'ul Improvements in llill, Platform, and other Scales; and I do hereby declare that the following is a full, clear, and exact description thereof, that will enable others skilled in the art to which it apport-airis to make and use the same, reference being had to the accompanying drawings and to the letters of reference marked thereon, which form a part of this specilieation.

My invention has relation to inill, platiorm, and other scales, constructed to operate a pointer or dial without springs, and, at. the same time, to be a perfect ii'idicator, always showing at a. glance the weight of artieles being weighed, and, by different sets ot' figures on. the dial, showing at the same time the number ot bushels and pounds oi grain ot' different denominations.

In the drawing, Figure lY represents a front view of my improved scale. Fig. 2 represents a. reverse sectional view ot the saine, showing the working parts.

A represents the revolving dial, upon which are circles of ligures, laid ott to represent pounds, bushels, tous, tvc.; the outside circle representing pounds; the next inside circle representing bushels ot' wheat and cloverseed, which is sixty pounds; the next inside circle representing bushels ot' corn. and rye, ot' 'fifty-six pounds; the next one barley, of lorty-cight pounds, and the next one oats, of thirty-two pounds to the bushel. The next or inside circle-not laid ott-may bc laid oft' l'or tons or any other denomination desired; and as .many other circles may bc added as may be desired ltor any purpose. u

This dial A is fast to, and revolves with, the shaft D, Fig. 2, which shaft rests and revolves upon the friction-wheels, two of which are shown at E E. The other two, being exactly similar, are not shown, but are on the same shafts h h, the two being removed in the drawing to show the working parts of the device. These shafts 7L 7L are held to place by the frame G, which also serves to hold the easing F in place, in which the dial A is protected, and to which the pointer a attached.

The dial may be made stationary, and the pointer revolve with the shaft D, and the same results will follow.

The rod'c (shown as broken oii') is the rod to which the platform is attached in the ordinary manner, and serves, by its connection, to operate the dial A. The frame Gr supports the cylinder by means of its knife-edges, one of which is represented by dotted lines on the eross-section of the cylinder C. This cyliudcr has one such knife-edge at each of its ends, which are so constructed as to make the turning point or knife-edge come at its een ter, and upon which the cylinder rocks. Upon this cylinder, and nearly around it, is placed a chain or band, d, which is fast to the cylinder at one of its ends, and its other end is made fast to the rod c. B is a weight, which is adjustable upon a rigid arm fast to, and reaching out from, the cylinder (l. Upon one side oi' this cylinder is also placed the segment of gear c, which engages with a pinion on the dial-shaft D. Upon the dial-shaft D is wound a small cord, to which is attached a small weight, j', which serves to counterbalA ance the friction of the dial-shaft D.

The mode of operation is as follows: Place the article to be weighed upon the platform. This will cause the rod c to pull upon the band d, which will cause the cylinder C to revolve and raise the weight B toward a horizontal position, and, as it will require increased force to balance it as it approaches the horizontal, the weight B will rise unt-il it balances the articles on the platform. By this motion of the cylinder C the dial A will revolve by means of the small weight f and segment-gear c and pinion on shaft D.

To balance the scale when nothing is on the platform, a small weight, b, is provided, fast to one end of a screw which passes through a nut in the weight B, by which means the weight B is brought to a perpendicular position.

The dial in the drawing is represented as weighing the amount oi iifty pounds, as shown by the outside circle of iigures 5 or, in the circle for barley, it shows one bushel and eighteen pounds.

Should it be weighted to two hundred and seventy pounds, for instance, it would show, in the circle for wheat, tour bushels and thirty pounls ol' wlleut g und, ol` corn und rye, four bushels :unl 'or'nsix pounds; or, of barley, five buhelr; und thirtypouiuls, and of oats there would be eight bushels and fourteen pounds, the pointer a showing,r all at ouee, as The amount is brought to it by the weight of ri-nin on the platform.

Having' thus described my invention, what I f'luim, and desire to secure by Letters Pil-tent, 1S-

ln a platform. or other scale, the revolving or stationary dial A, pointer a, dial or pointer shaft D, and Weight-cord und Weiglitf, in coni-Y binationwitli the Cylinder C, chain or its equivalent d, friction Wheels E E, segment-gear r, and Weight B, with its balance-weight :1nd screw b, substantially as and for the purpose hereinbefore set forth.

In testimony that I eluiin Jthe foregoing I have hereunto set my hand this 15th day ot' July, 1873.

lYitnesses: YILLLUI R. PARK.

R. R. BRIGGS, HENRY STEVENS, 

